51601201770 has 192 divisors, whose sum is σ = 135278729856. Its totient is φ = 12552744960.

The previous prime is 51601201747. The next prime is 51601201781. The reversal of 51601201770 is 7710210615.

51601201770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51601201770² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 183634030 + ... + 183634310.

It is an arithmetic number, because the mean of its divisors is an integer number (704576718).

Almost surely, 2^51601201770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51601201770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67639364928).

51601201770 is an abundant number, since it is smaller than the sum of its proper divisors (83677528086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51601201770 is a wasteful number, since it uses less digits than its factorization.

51601201770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 30.

The spelling of 51601201770 in words is "fifty-one billion, six hundred one million, two hundred one thousand, seven hundred seventy".